CrO2
      Baur W H, Khan A A
      Acta Crystallographica B27 (1971) 2133-2139
      Rutile-type compounds. VI.
      SiO2, GeO2 and a comparison with other rutile-type structures
      Note: data from Cloud et al (1962)
      _database_code_amcsd 0009413

      CELL PARAMETERS:    4.4210   4.4210   2.9170   90.000   90.000   90.000
      SPACE GROUP: P4_2/mnm  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     57.013
      Density (g/cm3):      4.892
      MAX. ABS. INTENSITY / VOLUME**2:      62.69313160    
      RIR:      4.173
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                28.55        100.00        3.1261    1   1   0         4
                36.92         55.25        2.4348    1   0   1         8
                40.82          8.66        2.2105    2   0   0         4
                42.38         14.79        2.1327    1   1   1         8
                45.90          4.28        1.9771    2   1   0         8
                56.20         52.69        1.6366    2   1   1        16
                59.10         15.12        1.5631    2   2   0         4
                63.82          7.23        1.4585    0   0   2         2
                66.93          8.28        1.3980    3   1   0         8
                71.36          9.42        1.3217    1   1   2         8
                71.76         16.21        1.3153    3   0   1         8
                78.58          2.48        1.2174    2   0   2         8
                86.00          4.72        1.1304    3   2   1        16
                88.45          2.73        1.1053    4   0   0         4
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.